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From:	"Gene Heskett (gheskett AT shentel DOT net) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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To:	geda-user AT delorie DOT com
Subject:	Re: [geda-user] rolling feature poll (pcb-rnd) --> (g-code linuxcnc)
Date:	Tue, 19 Apr 2016 09:08:26 -0400
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Reply-To:	geda-user AT delorie DOT com

On Tuesday 19 April 2016 08:30:56 gedau AT igor2 DOT repo DOT hu wrote:

> On Tue, 19 Apr 2016, Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) 
[via geda-user AT delorie DOT com] wrote:
> >>> 3 thou when made into gcode to mechanically engrave the circuit.
> >>> Eiother
> >>
> >> I'd love to fix gcode bugs, but I don't have any gcode-device. If
> >> you'd sign up for testing gcode fixes in pcb-rnd I can look for a
> >> free gcode-viewer and add the item on the list.
> >>
> >> In the meantime I think someone is also working on gcode fixes in
> >> the mainline.
> >
> > Linuxcnc and machinekit which are essentially the same software use
> > g-code, it is possible to run in simulation to test g-code. I have
> > spent the last months on linuxcnc including drawing some circuit
> > boards with pcb and have just started to look at g-code.
>
> Added item gcode. May there be enough testers signed up, I can fix the
> code (and this one is an easy target for mainline developers to
> merge).

Please try to resist the temptation to use octagon's when a circle is 
needed as eagle does. Likely because having that data simplifies the 
DRC.  So I can see where that could be a problem.  Secret trick, put the 
gcode interpretor into the relative mode, and use the radius mode to 
draw the circles. When the circle is done, revert the interpretor to 
absolute distance mode before making the next motion.  Result is perfect 
circles with 99.999% less hassle except for the design rules checker.

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>

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